Work hard—but not so hard that your dad worries about youWill the next generation pull its weight? That question has kept countless family jewelry store owners awake at night. But Murphy Jewelers’ Patrick Murphy worries about the opposite scenario. Since his daughter, Mallory, joined the business three years ago—after graduating with a degree in business entrepreneurship from Elizabethtown College—his concern has been ensuring she doesn’t work too hard, get “overwhelmed,” or totally flame out. “She has such a good head on her shoulders.… It would be easy to dump everything on her,” says Patrick, who helms the three Murphy Jewelers locations—Pottsville, Hamburg, and Center Valley, Pa.—with his wife, Kim. Mallory agrees that she’s “on the fast train” at Murphy ­Jewelers (which marks its centennial this year), but knows she’s at the beginning of what will su